ECN Electrical Forum - Discussion Forums for Electricians, Inspectors and Related Professionals

Topic Options
Rate This Topic
#217530 - 08/24/16 04:39 PM Hooking up bath fan/light
Lasalle Offline
New Member
Registered: 08/24/16
Posts: 1
Loc: MA
Hi: I am trying to install a bath fan...
Hi: I am trying to install a bath fan light fixture. Upon taking out the old one, I stupidly did not take a pic of the wiring. What I have is a 3(+ ground) cable and a 2 wire cable in the ceiling. The fixture is wired to a 2 rocker wall switch. I have tried numerous combos of wires and cannot get itright. The fixture has 4 wires- 1 blue 1 white light and power wires 1 black 1 white.Anyone have an idea how to wire this so both switches work?


Attachments
IMG_20160824_1453154_rewind.jpg




Edited by Lasalle (08/24/16 04:45 PM)
Top
Work Gear for Electricians and the Trades
#217531 - 08/24/16 06:28 PM Re: Hooking up bath fan/light [Re: Lasalle]
HotLine1 Offline


Member
Registered: 04/03/02
Posts: 6776
Loc: Brick, NJ USA
There should be mfg instructions and wiring diagram in the boxwith the fan.

Basic 'ringing' out the wiring will solve the situation..

Forum policy is not to provide information to the general public. You may be better off locating a local licensed electrical contractor.
_________________________
John
Top
#217533 - 08/24/16 07:53 PM Re: Hooking up bath fan/light [Re: Lasalle]
gfretwell Offline


Member
Registered: 07/20/04
Posts: 9039
Loc: Estero,Fl,usa
If things are as they should be. the 3 wire cable goes to the switch, you feed the black from the 2 wire cable to the white in the 3 wire and the other 2 are the switches coming back.
They go to the blue and black wires in the fan/light. The white from the 2 wire cable goes to the whites in the fan.
Open the switch box to confirm that the white actually feeds both switches.
Those "hot" whites in the 3 wire cable should be reidentified to some other color with tape.

_________________________
Greg Fretwell
Top
#217535 - 08/25/16 08:48 AM Re: Hooking up bath fan/light [Re: Lasalle]
BigB Offline
Member
Registered: 03/31/04
Posts: 719
Loc: Tucson, AZ USA
The two wire might also be tied in with the light to power a second light like the wall light over the vanity. Yes normally the 3 wire would be in the first light but if a remodel happened or the sparky just did it different it could be that way.
Another scenario is that the three wire may be the line in with a switch loop back although to switch both individually would have required improper use of the grounding conductor (which is common in DIY installations).
An electrician would be able to figure this out in a couple of minutes as Hotline suggested. Trial and error wiring methods are risky at best.


Edited by BigB (08/25/16 08:57 AM)
Top
#217536 - 08/25/16 12:48 PM Re: Hooking up bath fan/light [Re: Lasalle]
HotLine1 Offline


Member
Registered: 04/03/02
Posts: 6776
Loc: Brick, NJ USA
"Trial and error wiring methods are risky at best."

Hence, my comment.
_________________________
John
Top
#217537 - 08/25/16 02:37 PM Re: Hooking up bath fan/light [Re: Lasalle]
gfretwell Offline


Member
Registered: 07/20/04
Posts: 9039
Loc: Estero,Fl,usa
That is why I suggested looking in the box with the switch to verify the wire colors and as a sanity check that you are looking at the right cable.
_________________________
Greg Fretwell
Top
#217538 - 08/25/16 07:25 PM Re: Hooking up bath fan/light [Re: Lasalle]
HotLine1 Offline


Member
Registered: 04/03/02
Posts: 6776
Loc: Brick, NJ USA
Greg:
Please....do not think I have any issue with your comments.
I thought of possibly locking this out, but decided to let it ride.

_________________________
John
Top

Member Spotlight
Member Since: 11/17/00
Posts: 2232
New in the Gallery:
SE cable question
Featured:

2017 NEC and Related
2017 NEC
Now Available!

Shout Box


Who's Online
1 registered (ghost307), 67 Guests and 11 Spiders online.
Key: Admin, Global Mod, Mod
 
New in the Gallery:
SE cable question
 
Top Posters (30 Days)
Admin 49
HotLine1 43
gfretwell 18
Ruben Rocha 12
Trumpy 9
 
Newest Members
Freecrowder, clee512, Jdscott2005, FAIZAN, Regitest2

ECN Electrical Forums - sponsored by Electrical Contractor Network - Electrical and Code Related Discussion for Electrical Contractors, Electricians, Inspectors, Instructors, Engineers and other related Professionals